Nanosized Water Channels Associated with Hydrophobic and Hydrophilic Fibrillar Arrangements Formed on Nafion Surfaces in Confined Regions.

Herein, the origin of interfacial water nanosized channel distributions attached onto Nafion surfaces is investigated. The surface fibrillary hydrophilic and hydrophobic arrangements were observed on AFM images scanned on Nafion surfaces immersed in water. Then, by analyzing the force vs separation curves, it is possible to map arrays of interfacial water channels and their locations.

Prevalence of poor sleep quality in athletes before competition.

Objectives: The purpose of this study was to investigate athletes sleep quality before competition and its relationship with age, gender, sport modality, competitive level, competition result, and practice time.

Methods: The sample was 1010 Brazilian athletes (656 men and 354 women; 511 young and 499 adults), with an age of 20 ± 7 years old. Participants answered the question 'How would you evaluate the quality of your sleep in the past few days?' Participants rated their sleep quality on a Likert-type scale as follows: 1 = very poor, 2 = poor, 3 = regular, 4 = good, 5 = excellent.

Effect of yoga on the quality of life of patients with rheumatic diseases: Systematic review with meta-analysis.

Aim: To analyze the effects of yoga on the quality of life of patients with rheumatic diseases through a systematic review with meta-analysis.

Methods: This systematic review with meta-analysis was conducted following the recommendations of the Declaration of PRISMA. The searches were carried out on the databases PubMed, Web of Science, EBSCO, Scopus, and Cochrane until August 2018.

Sleep quality associated with mood in elite athletes.

: This study aimed to analyze the association between sleep quality and mood in elite athletes of different competitive levels. : Participants were 1041 elite athletes (aged 20.82 ± 6.

evaluation of porous hydrogel pins to fill osteochondral defects in rabbits.

Objective: This experimental study aimed to evaluate the biological performance of poly (l-co-D, l-lactic acid)-co-trimetilene carbonate/poly (vinyl alcohol) (PLDLA-co TMC/PVA), hydrogel scaffolds, as an implant in the filling (and not in the repair) of osteochondral defects in New Zealand rabbits, assessing the influence of the material in tissue protection .

Methods: Twelve rabbits were divided into groups of nine and 16 weeks. In each animal, an osteochondral defect was created in both medial femoral condyles.